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Finding the Fourth Proportional to 296,603.12, 444,948.06 and 86,213.72

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Solution

The fourth proportional to 296,603.12, 444,948.06 and 86,213.72 is: 129,333.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,603.12 : 444,948.06 = 86,213.72 : x
  2. Step 2: Convert to fraction form
    296,603.12/444,948.06 = 86,213.72/x
  3. Step 3: Cross multiply
    296,603.12x = 444,948.06 × 86,213.72
  4. Step 4: Simplify right side
    296,603.12x = 38,360,627,459.38
  5. Step 5: Solve for x
    x = 38,360,627,459.38/296,603.12
  6. Step 6: Final answer
    x = 129,333.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.